gruenfeld



.5.1. GHUENFELDJR. HOLLOW CONCREE POLE MAKING APPAI'TTUS.

APPLICATOk FILED JUNE F8. lJl

Pueams vay 9U, 9.

SHEETS-SHEET IA @y fr 1. J. GRUENFELD,-1A.

HOLLOW CONCRETE POLE MAKING APPARATUS.

APPLICATION FILED JUNE I8, i918. yfgo Patented May 20, 1919..

1.1. GRUENFELDJR. HOLLOW CONCRETE POLE MAKING APPARATUS.

APPLICATiON FILED JUNE 181 EENS.

Patented May 20, 1.91).

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Il SHEETS-SHEET 4- Mmmm 1.1. GRUENFELDAP.. HOLLOW CONCRETE POLE MALLLNG APPARATUS.

APPLICATION FILED JUNE i8` X918.

il SHEETS-SHEET 6.

IOW/mmm' I. I. GRUENFELD, IR.

HOLLOW CONCRETE POLE MAKING APPARATUS, APPLICATION FILED IUIIE 1 8. 15H41" 1,803,889. Pat-@mea MayQo, 1919.

I SHEETS-SHEET I.

LL GRUENFELB, in. HOLLOW comm-im; POLE MAKING APPARATUS.

APPLICATION FLED JUNI-18. NMEA www,

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1.1. GRUENFELDJR.

HOLLOW CONCRETE POLE MAKING APPARATUS..

L APPLICATION HLED JUNELS. X913, 1,430.3@899 Patened May 20, 1919.

Il SHEETS-SHEET 9.

lA J. GRUENFELD,V JR. HOLLOW CONCRETE POLE MAKING APPARATUSA APPLrcATloHfxLEn1uNe1e,1as3.

Patented May 20, 1919.4

u SHEETS-SHEET10- 1.1. GRUENFELDJR.

HOLLOW CONCRETE P E MAKING APPARATUS.

lutencd May 2U, 14912.

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. W/T/VESSJ 4UNITED sTATEs PATENT onirica.

JULIUS il'. GRUENFELD, JR., 0F CHICAGO, ILLINOIS, ASSIGNOR T0 MASSEY CONCRETE PRODUCTS CORPORATION, 0F CHICAGO ILLINOIS, .A CORPORATION 0F VI IRG-INIA.

.HOLLOW-concur:TE-ropE-MAKING ArraiiATUs.

Lacasse.

T0 all whom, z'mag/ concerne:

Be 1t known that I, JULIUS J. GRUENFELD,

Jr., a citizen of the United States, residing which wear of the parts and liability to breakage are reduced to a minimum. My invention also contemplates the provision of improved apparatus, the parts of which may be conveniently handled and manipulated in assemblage, and readily adjusted. A `further object resides in the provision of means whereby the apparatus can be readily adapted to the production of poles of diiferent lengths, and in an improved ar- Irangement whereby the proper distribution of the concrete is obtained.

Other objects of the invention reside in the provision of improved driving means; the provision of improved means for supporting the rotating parts and supporting them against whipping or deflection during rotation; the provision of improved bearings permitting adjustment of thev parts; the provision of an improvedarrangement' ot sectional driving casing and wearing g tires; the provision of improved means for preventing relative displacement of the interior parts of the apparatus, etc., as will further appear hereinafter. 1

I accomplish the foregoing by means of improvements illustrated in preferred form in the accompanying drawings, wherein:-

Figure 1 is a plan View of the driving mechanism for rotating the outer or -driving casing and its associated. parts; Fig. 2 is a side elevation of Fig. 1; Fig. 3 is an end elevation of the apparatus partially broken away showing the outer or driving casing and theI supporting standards or 'i x framework therefor; Fig. 4. is an elevation of a poi'tioni'of the skeleton reinforcing which isA supported in the mold proper and is adapted to be embedded in the concrete; Fig. 5 is a fragmentary sectional View, drawn en an enlilrged scale and illustrating the method i l l l Specification of Letters-Patent. Application inea June 1s, 191s. serial No. 240,646'.

Patented May 20, 1919.

of supporting the skeleton in the mold; Fig. 6 is an elevation and partial section illustrating a modified method of revolubly 'supporting the outer casing in the box-frames and also shows a portion of the brake mechanism; Fig. 7 is a section through the butt end of the apparatus showing the boxj frames in side elevation and the means whereby the outer casing is adjustably supported in such frames for rotation; Fig. 8

is an enlarged section showing one of .thel

rollers by means of which the intermediate casing carrying the molti proper is readily inserted in the outer or drivlng casing and supported therein; Fig. 9 is a crosssectional view through one of the lower adjustable rollers .which support the rotating lparts through the medium of wearing tires,

'together with the preferred form of bearing for such rollers; Fig. 10 is an enlarged plan view of the adjusting support for the .hearings shown in Fig. 9' F1 11 is a secf xi tion taken on the line X of Fig. l0; Fig. 12 is a section through the upper por;

tion of the boxLframe illustrating one of the upper rollers which support the drivlng'casing; Fig. -13'is a horizontal .section taken on the line XIII--XIII of Fig. 12;

'-Fig-14 isa typical elevation partly in sectionof the preferred form of the outer casing; illustrating the manner in which the sections are joined with each other and with the wearing tires therebetween; Fig. 15 is an enlarged sectional view of the tire and the join-t between the sections of the outer casing; Fi 16 is a' cross-section taken on the line X I-XVI of Fig. 14; Fig. 17 is a longitudinal section through the halves of the intermediate casing in which the mold proper is carried and shows the various typical forms of intermediate stiifening bearing rings and the end plates or closure members for such intermediate casin ;'Fig. 18 is a section on the line XVIII- VIII of Fig. 17, illustrating one typical stiffening ring for the intermediate casing, and illustrating the manner in which the mold is supported thereby; Fi'. 19 is a cross-section taken on the line 17, and illustrates another typicalform of stilening'ring, and the manner in which relative rotation of the mold with respect to the intermediate casing is prevented; Fig. QO'is a fragmentary section drawn on ios f2 0 ends of l5 adaptd ik i Y the mold E il). Whisk '51.1 'ing asng nth@v right han@ @nel o mm); i0- imma :View Of ,the mnh I v operation; L left han@ and of 4rgcd scade;

of@ fifa@ ble m0 ole haviiw' in corr( enclinl f plate and 'the machine.

Y olie 28 are djustably lifrf tudinzil sole ated on each 'transversal sole l outer ends of the nes carrying; iipstendingA with lecliinnj bolts 8l, si 'the inner and outer j sole plates and dein oi- 'the latter toward plane passing; from the ll' on each 'transversal i "neunten wie sets oi- Wedge r t erinit the rotation Wheel tlierelietw'cen, the also beine; centrally- .i a-cb. set of j lower plate 32 and he pceitions ol? which are ed by the locking bolts l the ends of Each end of ieel is supported ach or? rich is carried-y on el will be seen that a e conserueted to have lly eil? machine and i machine, and 'that the nel: only capable of it may be eanted to x" tilt the longitudinal cor mction ii is to be observed honsn'igs 36 are provided With bearing portions to lit the'balls 37 spherical yin which the ends of the trunnion. roller arles 22" are supjlbrted. These bearings constitute a ball and sachet joint which will permit 5 one oi the hoi'ifings Sli beingshift` ed vertically with respect to the other hensingr, Wliereiy the airis or' the trnnnion Wheel axles may be eanted.

lvlfhen all ef the par s just described have been finally adjirgj'ed fo.. a particular type of v ""1 .ed position by the lockingv bolts Figs. l arid l). The boils :i9 and the bolts respectively, serve lio position the honsi 36 members,

till

Inolfl, [hey a i. The yieldingmountingJ of the base sole plaie :El is inc` length,

and the Wedge idlers permits ei the inalring adjustments.

Another reason for providing a yielding nieuni/inn` for the idler rollers 24 is to permit obstructions to pass between the rails or tires d the trunnion Wheels. To these ends, the idler rollers are mounted as follows: (See particularly Figs. l2 and 13). n'the upper reach of each box-frame B, l have provided a vertical slotted guideway 40,`in Whch is mounted a. slide or cross-head 4l, the ends of the-axles of the idlors being journaled in such cross-head. rll`he stout compression spring' 42 normally serves 'to press the crossliead and its contained roller downwardly against the respective rail and maintains the drin/ingq shell A in proper position in the box-'trainee in the manner hereinbefore of the various pointed out, such spring' being topped by a pressure plate 43, and the t'enson of the springe' being; adjustable by a locking bolt 44. The spring is centered by bosses 4l and 42. l a. small obstruction falls between the trunnion rollers and the rails, the spring 42 will, yield and the rails Will ride over the obstruction. H an obstruction should fall between `the trunnion rollers and the rails of a size too great to pass therebetween, the arose-head will come against the stop 43', as a result of which thev particular trunnion Wheel affected will be broken, the trunnion wheels being constructed of such material and in such manner as to collapse under such strain before any damage occurs to the rails and the shell.'

Attention is new vdirected toFigs. i4, l and 16, which are views lshowing;v typical sections of the outer or driving shell and the manner/oi mountingr 'the Wearing' tires or rails beinveen the joint sections. It will be noted, roininspection of these figures, that the shell Al is composed of a plurality of seotone e, such sections being provided Ywith an annular flange 45 at each end` such as indicated at 46 to receive the inwardly projecting shank of the tires or rails 23. The thickness of the shank is such that the ends of the sections do notabut. The bolts 49 serve to connect the flanges 45. With the rail therebetween,y the construction being simple and economical. 'In Fig. 6 a modied arrangement for, supporting the tires or rails 23 is shown.

The sections a of the shell may be of varyas required. Thus, for example, the sections immediately adjacent the driving sheave casting1 7 are very short in order that, the shell .may be supported at points adjacent the application of power. The cast` ing' 7 is provided with annular brake hubs 50 which carry brake bands 5l such as shown, for example, in Fig. 6, the brake bands being operated in any preferred manner. Such braliine; mechanism is necessary e encountered in assembling the parts. To

overcome this diiiiculty I provide slots 74 in the lower faces of the ribs 69 of the upper section, such slots being of a size adapted to receive `the ends of the hooks and prevent the i same from turning. In assembling the upper half of a section is positioned with a concave side up and the hooks dropped into the slot 74, in which position the lower half of a sectioncan be readily dropped in to place and hooked. v

In Fig. 26, I have illustrated a plate 75 adapted to close the small or tip end of the mold and a plate 76 adapted to close oif the large or butt end of the mold. It will be noted that these plates have central apertures 77 and 78. These apertures are given a size to: conformiwith the diameter of the opening within the hollow pole.l The closure plates, although formed in this fashion, retain the grout or fresh concrete during rotation. The tipend closure plate 75 is secured in osition by means of an annular ring or colllar 7 9 havin of. A p ain ring or collar 8l retains the plate 76 in position, the end of the butt end section-in this case being provided with a groove or seat 82 to receive the closure plate.

After the mold has been assembled it is placed upon a tilting bridge or frame ll trunnioned as at 83, and 1s held in position thereon by a pluralit of fastening means such as the chains 84, t e tip end of the mold abutting against a block 85. The butt end of the bridge I is provided with a yoke 86 by means of which the butt end is lifted and the bridge rocked on its trunnion until the mold has been shifted to an angle of about 45, the foundation C being provided with a pit c into which the tip' end of the bridge and' mold A ter the mold .has been tilted on its bridge it is filled with the concrete until it is about half full, afterwhich it is rolled or i transferred into the lower half of the intermediate casing or holder d which is 'suitably supported on any preferred type of conveyor mechanism (not shown.) After this the upper half of the intermediate cas- 'spoot `to the holder or easing by ing lor holde'r is placed in position and the is .thus assembled in the intermediate casing, it is oentrally'positioned by the engagement of the end flanges or ribs 66 with the bearing rings d and by the engagement of the body of the mold with the fingers 64: of the rings d; it is held against rotation by the engage-I ment of the slotted fingers 65 of the rings d with the longitudinalribs and it is pre.

vented'from shiftinglongitudinally with rel the fingers 67 5 ashereinbefore pointed out.

a seat 80 turned on the face there- The holder and its contained mold are transferred by the conveyer mechanism, into the outer shell, the intermediate casing riding upon the casing rollers G3 in the manner hereinbefore described. After having been slipped into the outer shell, the intermediate casing is centrally clamped by means of the clamps H and rollers 53, after which the outer shell is rotated throwh the medium of the driving mechanism hereinbefore described, at first slowly in order to secure proper distribution of the fresh concrete throughout the mold, and afterward very rapidly,-500 revolutions per minute, more or less, as may be required. This rapid rotation of the parts is continued for about ten minutes vafterwhioh the casing and mold are retracted from the'outer shell and the upper halveshof the intermediate casing and mold are removed and the concrete allowed to set for aproper period of time.

When the mold is charged all of the fresh concrete works toward the tip end of the mold, but previous to rotationa bar or rod is thrust through the aperture 77 in the closure plate and worked through the concrete to make an initial central opening therein. This suffices to cause the concrete, under the initial slow rotation, to work from the tip end lengthwise to the butt end,

and when the parts are rapidly rotated an 'absolutely uniform distribution of the concrete takes place so that the resultant pole has a wall of uniform thickness-throughout. As previously indicated, it is essential to shift the horizontalaxis of the mold in varying degrees, dependent upon the length and taper of the moldbeing made in order to secure proper distribution of the concrete. If the parts were maintained truly horizontal, the concrete would all work toward one end. For this purpose the adjustablecarriages for the trunnion rollers 22 are provided as hereinbefore set forth. y

In case it is desired to use the same mold for forming poles of diderent lengths, this can be conveniently done by providing stopof"devices as shown in Figs. 31 and 32, one of such devices J being adapted to be used at the tipend of the mold and the other device K at the butt end of the mold. Theun devices may be used singly or together def pendent upon the circumstances of each particular case, and the lengths thereof may bevaried as required. Each device comprises a tube having at one end a plate 87 adapted to fit between the end section of the mold and its respective end collar, and having at the other end a plate 88 the diameter of which corresponds to the internal diameter of the mold. Thus, the plate87 of the stop-ofil member J is secured between the end' of the .tip end section of the mold and the collar 79 in the same manner that th-e the lower rollers being adjustable to altar the axis of the mold.

4. A rotary concrete pole making inachine comprising in combination a trame, a mold adapte'dto be revoluloly Supportedin said frame, and a plurality of antifrietion inenibers for carrying the mold, said members being capable 'of adjustment lon-- gitudinally, laterally and vertically of the machine.

5. A rotary concrete pole making ma chine comprising in combination a traine, a mold adapted to be revolubly supported in said frame, and a plurality olf antilriction. rollers having means for eanting the axis of revolution thereof.

6. A rotary concrete pole making ina chine Comprising in combination a trarne, a mold adapted to' be rovolubly supported in said frame, and a plurality of antifrictionrollers havingmeans for Gauting the oi revolution thereof and adjusting the rollers longitudinally, laterally and Yvertically oi Kthe machine.

` 7. A rotary concrete pole making inacliine comprising in combination a iframe, a mold. adapted to be revolubly supported in said vfrance, and a plurality of anti'friction rollers provided with universal mountinge and eupporting the mold.

` 8. A rotary concrete pole matting machine comprisingiin combination frame, a mold adapted to be revolubly supported in said frame, and a plurality of antit'riction rollers having axlee provided with ball and socket bearings, and means for cauting the axles.-

9. A rotary concrete pol-e making machine comprising in combination a trame, a mold adapted to be revolubly supported therein, a plurality of rollers mounted in. the lower part of said 'frame and adapted to carry the mold, a plurality of guides mounted in the upper part of Said frame, ciosel1eade on said guides, rollers in said crosreheads, and springs forcing said cross-heads inwardly toward the mold. y

l0. A rotary concrete pole making ina chine comprising in combination a trarnej a mold adapted to be revolubly supported therein, a plurality ol rollers .mounted in the lower part of Said frame and adapted t carry the mold, a plurality of guides .mounted .in the upper part or' Said traine, crosa heads on said guides, rollers on said crosa heads, springs forcing said cross-heads in -Wardly toward the mold, and means for positively limiting the outward movement of the cross-head away from the mold.

ll. A rotary roncrete pole making maf chine comprising' in combination an outer shell, a frame in which said Shell is revolubly mounted, a mold member adapted to loe inserted into and Withdrawn from said shell longitudinally tliereolf, Said Sliell being provided With recessed portions, and anti-- friction means carried in `said recessed por-- tions.

12. A rotary concrete pole making nia-- cliine comprisingin como" 'ition an outer shell, a frame in '-.vliicli said eliell is revolulily mounted5 a mold nie-miler oted inserted into and with( wn tro longitudinally tiiereo3 said C," vided with outwardly auteur antilfriotiou umane mounted i and adapted to support in L A. concrete pole ma Chine c.'oniprisingy in combinatie sectional mold ving sli revolubly supported in Said comprising a plurality flanged vende, .vearim posed between .ea-if meant for VFastening' with the railzf:

i te rif.

A rotary cfmerete pole making; niacliine `roprieiiug in combina n a trarne, a sectional inold receiving; ell adapt v, be revoluoly support@ in said iframe, sai-,fl shell compriein@n a. pli ty of erwione liar-- ing flanged ende. wear or rails terpoeed between said tout; r A through the flan of adjacen through the rails inter? and antilirietion menne on which Said ra.'

l5. rotary contrate chine eoinprien su con-il* mold receiving ...hell

lubly supported in er' comprising a. pli er 1 end to end, eue/li Heet provided with langee. interposed between eairl i for fastening the flanges rails therebetween.

l5. A rotary. concrete pole in. chino comprising' in nnnlaiuation fr mennen-'s being a mold receiving .shell ter@ le l luloly supported in e e.

comprising a pluraliev enel toend,l one et e: 'the ende of tlie Shell i drive ene'agin member, and means for l ingl saio, niemeer.'

l?. L rote concrete pole making ma: elaine compri up; in combination a traine and a mold resell/ing Shell adapted to be revolu'bly :supported in Said traine, Said Shell comprieingR a plurality of sections placed y' el? Seel-,ione

end to end, one of Ieaid sections intermediate the endsot 'l1-lie eliell. being pro-vi uit a elieave, and driving ineaue engaging the Said slieave.

tary com te e chine eoiiip'rieinw in combination.

d ri vir fr a mold "receta mi;

mettaient lll? igaoegeso said hook-like member in position to be passed through said aperture,

Bel. A rotary machine for makingr hollow concrete poles and the likev comprising in combination a frame, a tapered mold adapted to be revolubly supported in said iframe, andmeans whereby the axis oit" rotation may be altered to secure proper distribution oi' the concrete.

35. A rotary machine for making concrete poles 4and the like comprising in combination a frame, a plurality of antifriotion supn ports extending longitudinally of the machine, a tapered mold adapted to be revol lubly supported on said supports, and means for raising said supports toward one end of prising in combination a foundation, a tilting support mounted on said foundation and adapted to support the mold to 4be charged, means for tilting said support, and apit in the foundation.

39. ln an apparatus for makin rf'tnforced concrete poles and the like, the oombination of a mold adapted to receive a skeleton reinforcement in the interior thereof, and means for supporting the skeleton in the mold comprisingr a plurality ofspaoing members carried on the skeleton and adapted to-engage the interior of the mold at spaced intervals and to lie intermediate the skeleton and the mold.- A

4&0. lin an apparatus for making reinforced concrete poles and the like, the oombination of a mold adapted to receive a skeleton reinforcement in the interior thereof, and means for supporting the skeleton in the mold comprising a plurality of spacing members adapted to engage the interior .of the mold at spaced intervals and to lie intermediate the skeleton and the mold, said spacing members having a pointed end for 55 engagement with the inner face of the mold. .ln testimony whereof ll have hereunto signed my name.

JULUS J. GRUENFELD, JR. 

